2112421434203 has 4 divisors (see below), whose sum is σ = 2112568891920. Its totient is φ = 2112273976488.

The previous prime is 2112421434191. The next prime is 2112421434269. The reversal of 2112421434203 is 3024341242112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2112421434203 - 2⁴ = 2112421434187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112421434283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73707368 + ... + 73736021.

It is an arithmetic number, because the mean of its divisors is an integer number (528142222980).

Almost surely, 2^{2112421434203} is an apocalyptic number.

2112421434203 is a deficient number, since it is larger than the sum of its proper divisors (147457717).

2112421434203 is a wasteful number, since it uses less digits than its factorization.

2112421434203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147457716.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 2112421434203 its reverse (3024341242112), we get a palindrome (5136762676315).

The spelling of 2112421434203 in words is "two trillion, one hundred twelve billion, four hundred twenty-one million, four hundred thirty-four thousand, two hundred three".